The dust in the attic of the old conservatory didn’t just sit; it seemed to wait. Elias, a young violinist with a penchant for perfection but a lack of soul in his playing, had been sent there to find a "story worth playing." His teacher, a woman who spoke in metaphors and smelled of rosin, had grown tired of his technically flawless but emotionally vacant performances.
Composers use modifiers like Allegro con brio (with spirit) or Allegro ma non troppo (not too much) to refine the mood.
Mozart's Eine Kleine Nachtmusik (1st movement) is a classic example of the bright, energetic style. If you'd like to explore this further, I can:
Inspired, Elias took his violin out of its case. He didn't set his metronome. He thought of the baker’s flour, the children’s laughter, and the way light feels when it finally hits a dark room. He began to play.